Solar Mounting Bolts & Fasteners
Bolts, screws, nuts and washers for rail, clamp, bracket and roof-attachment interfaces. Send the mating component or drawing so thread, head geometry, length, material and finish can be confirmed before production.
- T-bolts & rail hardware
- Hex & flange bolts
- Roof screws
- Nuts & washers
- Drawing-based matching
Choose the fastener by interface, not by name alone
Similar-looking hardware can have different head geometry, thread, strength, coating and installation requirements. Match each part to the approved mounting-system detail.
T-Bolts & Hammer-Head Bolts
Used with compatible rail or channel profiles. Head width, head thickness, insertion method and rotation or engagement must match the receiving slot; thread size alone does not confirm fit.
Hex Bolts & Flange Bolts
For brackets, frames and other bolted joints where the drawing defines hole size, grip length, thread engagement, nut or washer arrangement and required material or finish.
Self-Drilling Screws
Suitable only where the selected roof or mounting system permits this fastening method. Confirm the supporting material, thickness range, screw specification and weather-sealing detail.
Structural & Lag Screws
Used for specified substrate connections when the mounting design calls for a penetrating structural fastener. Diameter, embedment or fixing depth and installation instructions must come from the approved system design.
Nuts & Locking Interfaces
Hex, flange, serrated or locking arrangements should be selected as part of the complete joint. Do not substitute a locking method without checking the mounting-system specification.
Flat & Sealing Washers
Washer diameter, material and sealing function must match the joint. Roof-penetration sealing should follow the complete attachment detail rather than relying on a washer description alone.
Specify the joint before the fastener
For an accurate match, start with the two components being connected and the installation method. A rail-channel bolt, clamp bolt and roof fastener can share a thread diameter but still be unsuitable for one another.
- Rail channel, slot, hole or mating-component drawing
- Thread diameter and pitch, overall length and usable thread
- Head geometry, drive and tool-access requirement
- Connected material thickness and required engagement
- Material, finish, exposure environment and sealing detail
- Installation instructions, including torque where specified by the system
Data to confirm for the actual fastener or hardware set
These fields are procurement inputs, not universal specifications. Final values should come from the selected mounting system, approved drawing or fastener standard.
| Fastener family | T-bolt / hammer-head bolt, hex or flange bolt, self-drilling screw, structural or lag screw, nut, washer or matched assembly. |
|---|---|
| Mating interface | Rail channel or slot dimensions, hole diameter, bracket or clamp geometry, connected material thickness and available tool access. |
| Thread & length | Diameter, pitch, total length, threaded length and required engagement according to the connection drawing. Do not infer the correct size from the product category alone. |
| Material | Stainless steel or coated carbon-steel options can be reviewed from the project specification. Where 304 / A2 or 316 / A4 is requested, confirm the exact grade and property class for the part. |
| Surface finish | Passivation, zinc or other project-specified coating where applicable. Finish must be compatible with the base material, exposure and fastener requirements. |
| Roof sealing | For penetrating roof fasteners, confirm the complete washer, gasket, flashing or attachment detail required by the roof and mounting system. |
| Installation | Tightening torque, embedment or fixing depth, pre-drilling and other installation limits should follow the exact fastener and mounting-system documentation. |
| Supply format | Loose parts, matched nuts and washers, counted hardware sets, labels and project packaging can be quoted after the BOM is confirmed. |
If the final SKU or mounting-system family is already known, use its drawing and installation manual instead of generic category values.
Send the connection details for a fastener quote
A drawing or rail/bracket profile is more useful than a generic bolt name. Share the information below so the interface can be reviewed before pricing and production.
- Fastener type and application
- Rail, bracket, clamp or joint drawing
- Thread, length, head and drive
- Material and surface finish
- Matched nut, washer or sealing parts
- Quantity, packaging and destination
Fastener matching questions
Short answers for details that should be confirmed before ordering.
Can a T-bolt be selected from thread size alone?
No. The T-head or hammer-head geometry must engage the specific rail or channel correctly. Provide the rail cross-section or approved part drawing together with the thread and required length.
Should 304 or 316 stainless steel be used?
The material should follow the project environment, connected materials and mounting-system specification. If a stainless grade is specified, confirm the exact grade and property class rather than substituting by appearance.
How should tightening torque be chosen?
Use the value specified for the exact fastener and mounting-system connection. Torque should not be copied from another rail system or selected from bolt diameter alone.